As long as you stick with the defaults and fix warnings and linter errors it should be mostly painless (<4 hours). This repo is really useful: https://github.c

As long as you stick with the defaults and fix warnings and linter errors it should be mostly painless (<4 hours). This repo is really useful: https://github.com/cexbrayat/angular-cli-diff https://github.com/cexbrayat/angular-cli-diff It lets you diff a simple project generated with different versions of angular-cli; that way you can easily see the any configuration options etc that have changed between releases.